There are diffs
Let's take Nike for example.
They got 3 diff types - speed, touch and power
Some are lighter, so it's under "Speed".
Some are designed diff to give u more force on shooting, so it's
under "power".
For touch, im not really sure how they do it... So... lol.
Buy F30 i guess... Selling like hotcakes. It's light , and comes
with great looking design.
I dont own one, buy few of my friends did.
For Adidas, if im not wrong, it's separated into 2 diff types... If
you happens to pass by queens way shopping center, u can see large
banners of 2 diff groups of soccer players standing in 2 rows,
looking back at eachother.. Im not sure if the banner is still
there or not, just to let you know...